xref: /linux/drivers/input/touchscreen/tsc200x-core.h (revision 4b660dbd9ee2059850fd30e0df420ca7a38a1856)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _TSC200X_CORE_H
3 #define _TSC200X_CORE_H
4 
5 /* control byte 1 */
6 #define TSC200X_CMD			0x80
7 #define TSC200X_CMD_NORMAL		0x00
8 #define TSC200X_CMD_STOP		0x01
9 #define TSC200X_CMD_12BIT		0x04
10 
11 /* control byte 0 */
12 #define TSC200X_REG_READ		0x01 /* R/W access */
13 #define TSC200X_REG_PND0		0x02 /* Power Not Down Control */
14 #define TSC200X_REG_X			(0x0 << 3)
15 #define TSC200X_REG_Y			(0x1 << 3)
16 #define TSC200X_REG_Z1			(0x2 << 3)
17 #define TSC200X_REG_Z2			(0x3 << 3)
18 #define TSC200X_REG_AUX			(0x4 << 3)
19 #define TSC200X_REG_TEMP1		(0x5 << 3)
20 #define TSC200X_REG_TEMP2		(0x6 << 3)
21 #define TSC200X_REG_STATUS		(0x7 << 3)
22 #define TSC200X_REG_AUX_HIGH		(0x8 << 3)
23 #define TSC200X_REG_AUX_LOW		(0x9 << 3)
24 #define TSC200X_REG_TEMP_HIGH		(0xA << 3)
25 #define TSC200X_REG_TEMP_LOW		(0xB << 3)
26 #define TSC200X_REG_CFR0		(0xC << 3)
27 #define TSC200X_REG_CFR1		(0xD << 3)
28 #define TSC200X_REG_CFR2		(0xE << 3)
29 #define TSC200X_REG_CONV_FUNC		(0xF << 3)
30 
31 /* configuration register 0 */
32 #define TSC200X_CFR0_PRECHARGE_276US	0x0040
33 #define TSC200X_CFR0_STABTIME_1MS	0x0300
34 #define TSC200X_CFR0_CLOCK_1MHZ		0x1000
35 #define TSC200X_CFR0_RESOLUTION12	0x2000
36 #define TSC200X_CFR0_PENMODE		0x8000
37 #define TSC200X_CFR0_INITVALUE		(TSC200X_CFR0_STABTIME_1MS    | \
38 					 TSC200X_CFR0_CLOCK_1MHZ      | \
39 					 TSC200X_CFR0_RESOLUTION12    | \
40 					 TSC200X_CFR0_PRECHARGE_276US | \
41 					 TSC200X_CFR0_PENMODE)
42 
43 /* bits common to both read and write of configuration register 0 */
44 #define	TSC200X_CFR0_RW_MASK		0x3fff
45 
46 /* configuration register 1 */
47 #define TSC200X_CFR1_BATCHDELAY_4MS	0x0003
48 #define TSC200X_CFR1_INITVALUE		TSC200X_CFR1_BATCHDELAY_4MS
49 
50 /* configuration register 2 */
51 #define TSC200X_CFR2_MAVE_Z		0x0004
52 #define TSC200X_CFR2_MAVE_Y		0x0008
53 #define TSC200X_CFR2_MAVE_X		0x0010
54 #define TSC200X_CFR2_AVG_7		0x0800
55 #define TSC200X_CFR2_MEDIUM_15		0x3000
56 #define TSC200X_CFR2_INITVALUE		(TSC200X_CFR2_MAVE_X	| \
57 					 TSC200X_CFR2_MAVE_Y	| \
58 					 TSC200X_CFR2_MAVE_Z	| \
59 					 TSC200X_CFR2_MEDIUM_15	| \
60 					 TSC200X_CFR2_AVG_7)
61 
62 #define MAX_12BIT			0xfff
63 #define TSC200X_DEF_X_FUZZ		4
64 #define TSC200X_DEF_Y_FUZZ		8
65 #define TSC200X_DEF_P_FUZZ		2
66 #define TSC200X_DEF_RESISTOR		280
67 
68 #define TSC2005_SPI_MAX_SPEED_HZ	10000000
69 #define TSC200X_PENUP_TIME_MS		40
70 
71 extern const struct regmap_config tsc200x_regmap_config;
72 extern const struct dev_pm_ops tsc200x_pm_ops;
73 extern const struct attribute_group *tsc200x_groups[];
74 
75 int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
76 		  struct regmap *regmap,
77 		  int (*tsc200x_cmd)(struct device *dev, u8 cmd));
78 void tsc200x_remove(struct device *dev);
79 
80 #endif
81